The growing interest in energy conservation has inspired companies to seek alternatives to highly polluting fuel electricity generation. This study designed an optimised solar wind power generation system to fulfil th...The growing interest in energy conservation has inspired companies to seek alternatives to highly polluting fuel electricity generation. This study designed an optimised solar wind power generation system to fulfil the energy requirement of a cold chain logistics centre. This study first conducted a thorough analysis of the clarity indicators and daily temperature positions of the cold chain logistics centre, determined the average daily electricity demand, and proposed an effective design scheme. The energy simulation software, RETScreen 8.0, was used to determine the scale of solar photovoltaic and wind power projects that meet the expected energy needs of the cold chain logistics centre. The results indicated that the estimated annual total energy demand was 833689.2 kWh. The annual power generation of 6 kW from solar photovoltaic projects and 150 kW from wind power projects was found to be enough to meet the expected electricity demand. Solar photovoltaic power generation and wind power generation account for 2.44% and 97.56%, respectively. The hybrid energy system achieved a 96.6% reduction in carbon emissions and provides a reasonable payback period of 6.1 years and an electricity generation of 904368.674 kWh per year. The feasibility of the project and the calculated period of investment return are very reasonable. Therefore, this hybrid renewable energy system provides reliable power by combining energy sources.展开更多
This study focuses on investigating the optimal investment strategy for an optimization problem with delay using the uncertainty theory. The financial market is composed of a risk-free asset and a risk asset with an u...This study focuses on investigating the optimal investment strategy for an optimization problem with delay using the uncertainty theory. The financial market is composed of a risk-free asset and a risk asset with an uncertain price process described by an uncertain differential equation. An optimization problem is assumed that its objective is a nonlinear function of decision variable. By deriving the equation of optimality, an analytical solution is obtained for the optimal delay investment strategy, and the optimal delay value function. Finally, an economic analysis and numerical sensitivity analysis are conducted to evaluate the research results.展开更多
This paper explores the pathways through which artificial intelligence(AI)enhances new quality productivity in new liberal arts education.By analyzing the role of AI in personalized learning,interdisciplinary integrat...This paper explores the pathways through which artificial intelligence(AI)enhances new quality productivity in new liberal arts education.By analyzing the role of AI in personalized learning,interdisciplinary integration,and the application of virtual reality/augmented reality technologies,it reveals how AI technology promotes the development of students’innovative capabilities and productivity in the context of new liberal arts education.The study shows that AI is not only a technical tool but also a driving force for transforming educational models and fostering knowledge innovation.Further exploration of the deep integration of AI and new liberal arts education is necessary to promote comprehensive social progress.展开更多
With the rapid development of the internet,smart classroom has become the research interest of modern-day educational informatization.With Tiktok,WeChat,QQ,and other new media,the intelligent teaching model of"ne...With the rapid development of the internet,smart classroom has become the research interest of modern-day educational informatization.With Tiktok,WeChat,QQ,and other new media,the intelligent teaching model of"new media+education" has been derived.The research subject in this study is the economic and management xmdergraduate course,Principles of Economics.In regard to that,it is expounded based on the new media and an intelligent teaching model is designed in line with the development of colleges and universities in the new era to change the plight of the traditional classroom teaching model,stimulate learners'enthusiasm and interest in learning,as well as improve the teaching effect.展开更多
The mass transfer of thiophene through pervaporation（PV） membranes could be facilitated by certain transitional metal ions like Ag+, Mn2+, and Cr3+ thanks to their p complexation with thiophene. In this study, Ag+, ...The mass transfer of thiophene through pervaporation（PV） membranes could be facilitated by certain transitional metal ions like Ag+, Mn2+, and Cr3+ thanks to their p complexation with thiophene. In this study, Ag+, Mn2+, and Cr3+ ions were loaded onto the polyether block amide（PEBAX）/PAN composite membranes and were tested on the performance for separation of thiophene/n-heptane mixture. Pervaporation test results showed that the pervaporative separation index increased significantly to 73.1%, 75.5%, and 97.2% at 30 oC for the Ag+-, Mn2+-, Cr3+-loaded PEBAX membranes, respectively,as compared to the pristine PEBAX/PAN composite membrane.展开更多
The Tenant of Wildfell Hall,firstly published in 1848,was the second and final novel of Anne Brontë,the youngest of the Brontësisters,telling a story of the mysterious young widow Helen Huntingdon,who flees ...The Tenant of Wildfell Hall,firstly published in 1848,was the second and final novel of Anne Brontë,the youngest of the Brontësisters,telling a story of the mysterious young widow Helen Huntingdon,who flees her abusive husband and hides with her son at Wildfell Hall.Just as most contemporary critic defines it as one of the first feminist novels,the overall characterization of Helen sends a strong message of the empowerment of women.What confuses modern readers,however,is the subtle confrontation between the empowerment and its subversion.Thus,this paper conducts an in-depth analysis of the text concerning Anne's empow⁃erment of Helen and the corresponding subversion of the established empowerment before unveiling the fundamental cause of such arrangement with a view of shedding light on the comprehension of Anne Brontë's belief in universal social issues.展开更多
As the rapid development of human society, thousands of new words are coined in English language every day by applying the word-formation devices to express new ideas. Lexicographers need to decide how to face the pro...As the rapid development of human society, thousands of new words are coined in English language every day by applying the word-formation devices to express new ideas. Lexicographers need to decide how to face the problem of neologism as to how many of the new words should be included in the dictionary. In this essay, three new words concerning environmental issue will subject to analysis with Corpus of Contemporary American English(COCA) and the FUDGE Factors in order to predict new words' future success.展开更多
The Romance of the Forest,first published in 1791,was Ann Radcliffe’s first and major success,establishing her reputa⁃tion as one of the masters of Gothic novels in the eighteenth century.Given that Gothic novel is s...The Romance of the Forest,first published in 1791,was Ann Radcliffe’s first and major success,establishing her reputa⁃tion as one of the masters of Gothic novels in the eighteenth century.Given that Gothic novel is socially conservative,its construc⁃tion of female character has long been in line with the deep-rooted notion of the“proper women”,under which circumstance Ann’s treatment of feminism through Adeline is utterly confusing to many.Thus,based on Edmund Burke’s aesthetics concept of picturesque and sublime,this paper conducts a detailed analysis of the landscape in the novel,in an effort to argue that Ann con⁃structs a mixed female identity,an identity stressing on both feminine sensibility and masculine rationality.展开更多
In the process of software development,the ability to localize faults is crucial for improving the efficiency of debugging.Generally speaking,detecting and repairing errant behavior at an early stage of the developmen...In the process of software development,the ability to localize faults is crucial for improving the efficiency of debugging.Generally speaking,detecting and repairing errant behavior at an early stage of the development cycle considerably reduces costs and development time.Researchers have tried to utilize various methods to locate the faulty codes.However,failing test cases usually account for a small portion of the test suite,which inevitably leads to the class-imbalance phenomenon and hampers the effectiveness of fault localization.Accordingly,in this work,we propose a new fault localization approach named ContextAug.After obtaining dynamic execution through test cases,ContextAug traces these executions to build an information model;subsequently,it constructs a failure context with propagation dependencies to intersect with new model-domain failing test samples synthesized by the minimum variability of the minority feature space.In contrast to traditional test generation directly from the input domain,ContextAug seeks a new perspective to synthesize failing test samples from the model domain,which is much easier to augment test suites.Through conducting empirical research on real large-sized programs with 13 state-of-the-art fault localization approaches,ContextAug could significantly improve fault localization effectiveness with up to 54.53%.Thus,ContextAug is verified as able to improve fault localization effectiveness.展开更多
1 Introduction For developers,fault localization is the most tedious and time-consuming process.In order to reduce the burden of developers,researchers have developed various techniques to help reduce the cost of loca...1 Introduction For developers,fault localization is the most tedious and time-consuming process.In order to reduce the burden of developers,researchers have developed various techniques to help reduce the cost of locating faults based on possibility of containing a fault in program statements[1].Among them,coverage-based fault localization is one of the most studied automated fault localization techniques.Coverage-based fault localization methods utilize a type of preliminary information to localize the faults in programs,which is a matrix of statements’coverage information.The value of each element is 1 or 0,in which 1 means a statement is executed and 0 denotes a statement is not executed[1].展开更多
With the growing requirements of web applications,web components are developed to package the implementation of commonly-used features for reuse.In some cases,the developer may want to reuse some features which cannot...With the growing requirements of web applications,web components are developed to package the implementation of commonly-used features for reuse.In some cases,the developer may want to reuse some features which cannot be customized by the component’s APIs.He/she has to extract the implementation by hand.It is labor-intensive and error-prone.Considering the widely-used test cases which can be useful to specify the software features,a test-driven approach is proposed to extract the implementation of the desired features in web components.The satisfaction of the user^requirements is transformed into the passing rate of user-specified test cases.In this way,the quality of the extraction result can be evaluated automatically.Meanwhile,a record/replay-based GUI test generation method is proposed to ensure that the extraction result has the correct GUI appearance.To extract the feature implementation,a hierarchical genetic algorithm is proposed to find the code snippet that can pass all the tests and has the approximate smallest size.We compare our method with two existing feature extraction methods.The result shows that our method can extract the correct implementation with the minimum size.A human-subject study is conducted to show the effectiveness and weaknesses of our method in helping users extract the features.展开更多
文摘The growing interest in energy conservation has inspired companies to seek alternatives to highly polluting fuel electricity generation. This study designed an optimised solar wind power generation system to fulfil the energy requirement of a cold chain logistics centre. This study first conducted a thorough analysis of the clarity indicators and daily temperature positions of the cold chain logistics centre, determined the average daily electricity demand, and proposed an effective design scheme. The energy simulation software, RETScreen 8.0, was used to determine the scale of solar photovoltaic and wind power projects that meet the expected energy needs of the cold chain logistics centre. The results indicated that the estimated annual total energy demand was 833689.2 kWh. The annual power generation of 6 kW from solar photovoltaic projects and 150 kW from wind power projects was found to be enough to meet the expected electricity demand. Solar photovoltaic power generation and wind power generation account for 2.44% and 97.56%, respectively. The hybrid energy system achieved a 96.6% reduction in carbon emissions and provides a reasonable payback period of 6.1 years and an electricity generation of 904368.674 kWh per year. The feasibility of the project and the calculated period of investment return are very reasonable. Therefore, this hybrid renewable energy system provides reliable power by combining energy sources.
文摘This study focuses on investigating the optimal investment strategy for an optimization problem with delay using the uncertainty theory. The financial market is composed of a risk-free asset and a risk asset with an uncertain price process described by an uncertain differential equation. An optimization problem is assumed that its objective is a nonlinear function of decision variable. By deriving the equation of optimality, an analytical solution is obtained for the optimal delay investment strategy, and the optimal delay value function. Finally, an economic analysis and numerical sensitivity analysis are conducted to evaluate the research results.
基金Guangdong Association for Non-Government Education,2024 Private University Research Project(GMG2024019)Guangzhou College of Commerce,2024 Higher Education Teaching Reform Project(2024JXGG49)China Association of Higher Education,2023 Higher Education Scientific Research Planning Project(23SZH0416)。
文摘This paper explores the pathways through which artificial intelligence(AI)enhances new quality productivity in new liberal arts education.By analyzing the role of AI in personalized learning,interdisciplinary integration,and the application of virtual reality/augmented reality technologies,it reveals how AI technology promotes the development of students’innovative capabilities and productivity in the context of new liberal arts education.The study shows that AI is not only a technical tool but also a driving force for transforming educational models and fostering knowledge innovation.Further exploration of the deep integration of AI and new liberal arts education is necessary to promote comprehensive social progress.
文摘With the rapid development of the internet,smart classroom has become the research interest of modern-day educational informatization.With Tiktok,WeChat,QQ,and other new media,the intelligent teaching model of"new media+education" has been derived.The research subject in this study is the economic and management xmdergraduate course,Principles of Economics.In regard to that,it is expounded based on the new media and an intelligent teaching model is designed in line with the development of colleges and universities in the new era to change the plight of the traditional classroom teaching model,stimulate learners'enthusiasm and interest in learning,as well as improve the teaching effect.
基金The financial support from the Dean Project of Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology (2013Z009)the Guangxi Natural Science Fund (2014jjAA20079)the Guangdong Province of Quality and Technical Supervision Bureau (2018ZZ01) is greatly appreciated
文摘The mass transfer of thiophene through pervaporation（PV） membranes could be facilitated by certain transitional metal ions like Ag+, Mn2+, and Cr3+ thanks to their p complexation with thiophene. In this study, Ag+, Mn2+, and Cr3+ ions were loaded onto the polyether block amide（PEBAX）/PAN composite membranes and were tested on the performance for separation of thiophene/n-heptane mixture. Pervaporation test results showed that the pervaporative separation index increased significantly to 73.1%, 75.5%, and 97.2% at 30 oC for the Ag+-, Mn2+-, Cr3+-loaded PEBAX membranes, respectively,as compared to the pristine PEBAX/PAN composite membrane.
文摘The Tenant of Wildfell Hall,firstly published in 1848,was the second and final novel of Anne Brontë,the youngest of the Brontësisters,telling a story of the mysterious young widow Helen Huntingdon,who flees her abusive husband and hides with her son at Wildfell Hall.Just as most contemporary critic defines it as one of the first feminist novels,the overall characterization of Helen sends a strong message of the empowerment of women.What confuses modern readers,however,is the subtle confrontation between the empowerment and its subversion.Thus,this paper conducts an in-depth analysis of the text concerning Anne's empow⁃erment of Helen and the corresponding subversion of the established empowerment before unveiling the fundamental cause of such arrangement with a view of shedding light on the comprehension of Anne Brontë's belief in universal social issues.
文摘As the rapid development of human society, thousands of new words are coined in English language every day by applying the word-formation devices to express new ideas. Lexicographers need to decide how to face the problem of neologism as to how many of the new words should be included in the dictionary. In this essay, three new words concerning environmental issue will subject to analysis with Corpus of Contemporary American English(COCA) and the FUDGE Factors in order to predict new words' future success.
文摘The Romance of the Forest,first published in 1791,was Ann Radcliffe’s first and major success,establishing her reputa⁃tion as one of the masters of Gothic novels in the eighteenth century.Given that Gothic novel is socially conservative,its construc⁃tion of female character has long been in line with the deep-rooted notion of the“proper women”,under which circumstance Ann’s treatment of feminism through Adeline is utterly confusing to many.Thus,based on Edmund Burke’s aesthetics concept of picturesque and sublime,this paper conducts a detailed analysis of the landscape in the novel,in an effort to argue that Ann con⁃structs a mixed female identity,an identity stressing on both feminine sensibility and masculine rationality.
文摘In the process of software development,the ability to localize faults is crucial for improving the efficiency of debugging.Generally speaking,detecting and repairing errant behavior at an early stage of the development cycle considerably reduces costs and development time.Researchers have tried to utilize various methods to locate the faulty codes.However,failing test cases usually account for a small portion of the test suite,which inevitably leads to the class-imbalance phenomenon and hampers the effectiveness of fault localization.Accordingly,in this work,we propose a new fault localization approach named ContextAug.After obtaining dynamic execution through test cases,ContextAug traces these executions to build an information model;subsequently,it constructs a failure context with propagation dependencies to intersect with new model-domain failing test samples synthesized by the minimum variability of the minority feature space.In contrast to traditional test generation directly from the input domain,ContextAug seeks a new perspective to synthesize failing test samples from the model domain,which is much easier to augment test suites.Through conducting empirical research on real large-sized programs with 13 state-of-the-art fault localization approaches,ContextAug could significantly improve fault localization effectiveness with up to 54.53%.Thus,ContextAug is verified as able to improve fault localization effectiveness.
文摘1 Introduction For developers,fault localization is the most tedious and time-consuming process.In order to reduce the burden of developers,researchers have developed various techniques to help reduce the cost of locating faults based on possibility of containing a fault in program statements[1].Among them,coverage-based fault localization is one of the most studied automated fault localization techniques.Coverage-based fault localization methods utilize a type of preliminary information to localize the faults in programs,which is a matrix of statements’coverage information.The value of each element is 1 or 0,in which 1 means a statement is executed and 0 denotes a statement is not executed[1].
基金supported by the Key-Area Research and Development Program of Guangdong Province under Grant No.2020B010165001the National Natural Science Foundation of China under Grant No.61976061Guangdong Basic and Applied Basic Research Foundation under Grant No.2020A1515010973.
文摘With the growing requirements of web applications,web components are developed to package the implementation of commonly-used features for reuse.In some cases,the developer may want to reuse some features which cannot be customized by the component’s APIs.He/she has to extract the implementation by hand.It is labor-intensive and error-prone.Considering the widely-used test cases which can be useful to specify the software features,a test-driven approach is proposed to extract the implementation of the desired features in web components.The satisfaction of the user^requirements is transformed into the passing rate of user-specified test cases.In this way,the quality of the extraction result can be evaluated automatically.Meanwhile,a record/replay-based GUI test generation method is proposed to ensure that the extraction result has the correct GUI appearance.To extract the feature implementation,a hierarchical genetic algorithm is proposed to find the code snippet that can pass all the tests and has the approximate smallest size.We compare our method with two existing feature extraction methods.The result shows that our method can extract the correct implementation with the minimum size.A human-subject study is conducted to show the effectiveness and weaknesses of our method in helping users extract the features.
